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TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on at all. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.
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TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.
If this doesn't do it, reply to this post and we'll go on to the next step.
TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.
The 86 has more memory. It also has some advanced calculus capabilities the 83 doesn't. However you're much more likely to see examples for the 83 in textbooks and other references.
To enter a power of ten, use EE, which is the 2nd function of the , key just above the 7 key. To raise a value to another value, use the ^ key just above the divide key.
The button cell backup battery keeps the memory electrically refreshed when the calculator is turned OFF. The necessary power for regular use is supplied by the 4 AAA batteries (main power). That nothing happened when you put in a fresh set of (expensive) lithium batteries may be due to the screen being too dim to see anything.
If the calculator displays RAM CLEARED each time it is turned on, it may be due to a depleted backup battery. The battery model number is CR1616 or CR1620. On my TI84PLUS the backup battery is of type 303 (Sony) or SR44SW (Maxell).
i found this somewhere else on this website
and it worked for my broken ti-83plus which had same odd startup symptoms.
Remove one of the AAA batteries. Press and hold CLEAR while reinstalling the AAA battery. Continue holding CLEAR button and press ON. Release buttons and press CLEAR again. Calculator should be normal mode now. ;0)
Firstly check the battery compartment for any sign that the old batteries have leaked. Look for signs of corrosion, white powdery deposits on any of the contacts? You can clean the contacts with a little alcohol or a light abrasive. Also check they are in the correct way round!!
Next you can reset the calculator as described on page 740 of the manual which you can download below:
http://education.ti.com/guidebooks/graphing/83p/83m$book-eng.pdf
The full reset of the calculator is as per this diagram:
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